<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>注册页面</title>
    <link rel="stylesheet" href="css/common.css">
    <link rel="stylesheet" href="css/login.css">
</head>
<body>
    <!-- 导航栏 -->
    <div class="nav">
        网页聊天
    </div>
    <!-- 主窗口区 -->
    <div class="login-container">
        <!-- 副窗口 -->
        <div class="login-dialog">
            <!-- 注册 -->
            <h3>注册</h3>
            <!-- 输入框 -->
            <div class="row">
                <span>用户名</span>
                <input type="text" id="username">
            </div>
            <!-- 输入框 -->
            <div class="row">
                <span>密码</span>
                <input type="password" id="password">
            </div>
            <!-- 注册按钮 -->
             <div class="row">
                <button id="submit">注册</button>
             </div>
        </div>
    </div>
    <!-- 引入jquery -->
    <script src="https://ajax.aspnetcdn.com/ajax/jquery/jquery-3.6.0.min.js"></script>
    <!-- 实现前后端交互 -->
     <script>
        let submitButton = document.querySelector('#submit');
        submitButton.onclick = function() {
            //1.获取用户名和密码
             let username = document.querySelector('#username').value;
            let password = document.querySelector('#password').value;
            if(username == '' || password == '') {
                alert("您输入的账号或密码为空!");
                return;
            }
            //2.发生请求
            $.ajax({
                url: '/register',
                type: 'post',
                data: {
                    username: username,
                    password: password
                },
                success: function(body) {
                    //3.处理响应
                    if(body && body.userId > 0) {
                        //注册成功
                        alert("注册成功!");
                        //跳转页面
                        location.assign('/login.html');
                    }else {
                        alert("注册失败!");
                    }
                }
            });
        }
     </script>
</body>
</html>